Lady-Comp · Cycle awareness, on-device only

Nothing leaves the device. Not to the cloud, not to your phone, not to anyone.

Lady-Comp is a cycle monitor with no app, no Bluetooth, and no data upload. Everything happens on the device. Your body's information stays on your side of the room.

$369$399Save $30

One-time purchase. No subscription. No app. FDA 510(k) cleared.

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The privacy pitch

Lady-Comp does not sync. Not to Bluetooth, not to your phone, not to a Swiss server, not to us, not to anyone. There is no cloud sync to disable because there is no cloud sync at all. Your cycle data lives on the device you hold. Full stop.

No app. No Bluetooth. Ever. There is no phone integration to break, hack, or subpoena.
6-month forecast on the device. See where you are in your cycle without leaving the screen in your hand.
FDA 510(k) cleared. Higher regulatory bar than Daysy (which is FDA-registered).
40 years of algorithm refinement. Trusted by millions of women across four decades.

Post-Dobbs privacy check

Where does your cycle data live? Actually.

Every other cycle tracker on the US market stores your data somewhere else. Servers. Cloud. Your phone. Their partner integrations. Lady-Comp is the exception.

Product category	Where data lives	Phone required	Third-party integrations
Lady-Comp	On the device only	No	None
Daysy (with app)	Device by default, Swiss servers if you opt in	Optional	None
Subscription cycle apps	Company cloud	Yes, always	Insurance, marketing
Wearables (Oura / Apple Watch)	Company cloud	Yes, always	NC, Clue, Flo, Apple Health
Free calendar apps	Company cloud + ads	Yes, always	Advertising networks

This is not a marketing claim. Lady-Comp physically cannot sync because it has no Bluetooth radio and no app to sync to. There is no privacy setting to configure because there is no data flow to configure.

The questions people ask

Privacy-first cycle awareness. Answered.

Is Lady-Comp accurate without an app?

Yes. The Lady-Comp screen shows your cycle phase directly. The algorithm is the same class that Daysy uses, refined against 40 years of cycles. The app is a convenience for Daysy; Lady-Comp does the same job on the device.

What happens to my cycle data if I lose the Lady-Comp?

The data is gone with the device. There is no cloud backup because there is no cloud. This is the trade-off Lady-Comp customers explicitly want. If you want cloud backup as a feature, Daysy plus the DaysyDay app is the version that offers it.

Is Lady-Comp a contraceptive device?

No. Lady-Comp is FDA 510(k) cleared as an aid to conception, not as a contraceptive. How you apply the cycle information is your decision, ideally with your provider.

What's the difference between Lady-Comp and Daysy?

Same sensor, same algorithm class. Different form factor and app strategy. Daysy syncs to a companion app if you opt in. Lady-Comp is app-free and displays the same information on the device's built-in screen. Lady-Comp is FDA 510(k) cleared; Daysy is FDA-registered as Class I. Choose Lady-Comp if data privacy or "no phone in my morning" matters most; choose Daysy if you want the app data and charting.

Why is Lady-Comp more expensive than Daysy?

Lady-Comp includes a built-in display and processing hardware so it can show cycle information without a paired phone. Daysy's design offloads the display to your phone, which lowers the manufacturing cost. Different value, different price.

Your body. Your device. Yours.

Lady-Comp · $369 · One-time purchase · FDA 510(k) cleared · No app · No sync · No cloud · Free US shipping · 30-day money-back.

Add Lady-Comp to cart · $369

Because in 2026, the pitch "nothing leaves the device" is the pitch.